1 /*
2 * Copyright 2004-2005 Dan Washusen
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.reactive.beans.factory.config;
18
19 /***
20 * Evalutates a placeholder returning the value retrieved from the configuration source.
21 *
22 * @author Dan Washusen
23 * @version $Id: PlaceholderEvaluator.java,v 1.2 2004/12/29 11:59:31 dan_washusen Exp $
24 * @since 16.12.2004
25 */
26 public interface PlaceholderEvaluator {
27 /***
28 * Evaluates an expression to a value defined in the configuration agent.
29 * @param placeholder The placeholder to evaluate
30 * @return The value returned from the configuration source
31 */
32 Object evaluate(Placeholder placeholder);
33 }